Process of obtaining marketable eleectrolytic deposits.



UNITED STATES PATENT OFFICE.

PIERRE STEENLET, OF BRUSSELS, BELGIUM, ASSIGNOR TO MAROEL PERREW LLOYD,OF BRUSSELS, BELGIUM.

PROCESS OF OBTAINING IVIARKETABLE ELECTROLYTIC DEPOSITS.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed Novemberfl, 1903. Serial No. 180,155.

This invention relates to the art of electro plating orelectrodepositing, and it has reference particularly to those processesin this art in which the anode and cathode are separated by a suitablediaphragm.

It is well recognized that in the electroplating operations a verymaterial improvement results from adding to the electrolyte smallquantities of certain organic materials, as albuminoids. It is also awell-known fact that such additions to the electrolyte are removed fromthe latter by electrolytic action or occluded in the deposit, wherebythe latter is rendered brittle or irregular and cannot be treated inmetallurgy unless it is previously melted.

I have discovered that the objections,at tending the old method of usingorganic materials in connection with electrodepositing may be overcomeby employing a diaphragm impregnated with or otherwise made to carry insuitable disposition and quantity the organic substance, which latter isrendered insoluble. The process then becomes one in which the organicsubstance is not influenced by the electrolytic action or by theelectrolyte itself, with the result that it does not en ter into thecomposition of the resultant deposit and does not deleteriously affectthe same. Said albuminous or other organic I substance being madeinsoluble and the diaphragm charged therewith being interposed betweenthe anode and the cathode, the electrolytic action on the resultantdeposit remains the same as to qualitythat is, an increased and regulardeposit is obtainedand, further, said increased deposit is not mixedwith organic substances and the deposited metal may be directly treatedin metallurgy or used directly as metal plates. Such results have neverbeen obtained by the old processes, whereby brittle or irregulardeposits have been only obtainable.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

ing witnesses.

PIERRE STEENLET. Witnesses:

JOSEPH MARKL, GREGORY PHELAN.

It is hereby certified that in Letters Patent No. 807,973, grantedDecember 19,

1905, upon the application of Pierre Steenlet, of Brussels, Belgium, foran improvement in the "Processes of Obtaining Marketable ElectrolyticDeposits, an error appears in the printed specification requiringcorrection, as follows: On page 1, line 66, the word from should readform; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the easein the Patent Office.

Signed and sealed this 2nd day of January, A. 1)., 1906.

[SEAL] F. I. ALLEN,

Commissioner of Patents.

